Hose Reducer 3/4-1/2" (19-13mm) - Brian Ward, Marine Equipment
Hose Reducer 5/16" M to 1/4" F
5/8 Hose ID x 1/2 Hose ID Barb Reducer Tube Splicer Joiner Union Brass Fitting | eBay
Freeflush hose adaptor/reducer, 1 1/4" to 1/2" barbed, snap lock (hoze – Freeflush Water Management Ltd.
Brass Pipe Fittings, Water Hose Adapter, G 1/2 Female to G 3/8 Male Reducer Adapter, Compression Fitting for Kitchen Bathroom Faucet, Pipe Connector with Rubber Washer,(2 Pack) : Amazon.co.uk: DIY & Tools
Chrome Plated Shower Hose Reducer Adapter from 1/2 x 3/4 INCH BSP | eBay
1-1/2" to 1-3/4" Inch Hose Barb Splice Coupler Repair Reducer Fitting Adapter | AN627-28-24A - ICT Billet
Hose Reducer 11/2-1" (38-25mm) - Brian Ward, Marine Equipment